EP0243604A3 - A magnetic recording medium - Google Patents

A magnetic recording medium Download PDF

Info

Publication number
EP0243604A3
EP0243604A3 EP87102620A EP87102620A EP0243604A3 EP 0243604 A3 EP0243604 A3 EP 0243604A3 EP 87102620 A EP87102620 A EP 87102620A EP 87102620 A EP87102620 A EP 87102620A EP 0243604 A3 EP0243604 A3 EP 0243604A3
Authority
EP
European Patent Office
Prior art keywords
recording medium
magnetic recording
magnetic
medium
recording
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP87102620A
Other versions
EP0243604A2 (en
EP0243604B1 (en
Inventor
Richard Henry Ahlert
James Kent Howard
Grace Su Lim
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0243604A2 publication Critical patent/EP0243604A2/en
Publication of EP0243604A3 publication Critical patent/EP0243604A3/en
Application granted granted Critical
Publication of EP0243604B1 publication Critical patent/EP0243604B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/64—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent
    • G11B5/65—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition
    • G11B5/656—Record carriers characterised by the selection of the material comprising only the magnetic material without bonding agent characterised by its composition containing Co
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/7368—Non-polymeric layer under the lowermost magnetic recording layer
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73913—Composites or coated substrates
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/62—Record carriers characterised by the selection of the material
    • G11B5/73—Base layers, i.e. all non-magnetic layers lying under a lowermost magnetic recording layer, e.g. including any non-magnetic layer in between a first magnetic recording layer and either an underlying substrate or a soft magnetic underlayer
    • G11B5/739—Magnetic recording media substrates
    • G11B5/73911—Inorganic substrates
    • G11B5/73917—Metallic substrates, i.e. elemental metal or metal alloy substrates
    • G11B5/73919—Aluminium or titanium elemental or alloy substrates
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/922—Static electricity metal bleed-off metallic stock
    • Y10S428/9265—Special properties
    • Y10S428/928—Magnetic property
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12597—Noncrystalline silica or noncrystalline plural-oxide component [e.g., glass, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
    • Y10T428/12625—Free carbon containing component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12674—Ge- or Si-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/12743—Next to refractory [Group IVB, VB, or VIB] metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12736—Al-base component
    • Y10T428/1275—Next to Group VIII or IB metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12875—Platinum group metal-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12937—Co- or Ni-base component next to Fe-base component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y10T428/12771—Transition metal-base component
    • Y10T428/12861—Group VIII or IB metal-base component
    • Y10T428/12944—Ni-base component

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Magnetic Record Carriers (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
EP87102620A 1986-04-29 1987-02-24 A magnetic recording medium Expired - Lifetime EP0243604B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/857,019 US4654276A (en) 1986-04-29 1986-04-29 Magnetic recording medium with an underlayer and a cobalt-based magnetic layer
US857019 2010-08-16

Publications (3)

Publication Number Publication Date
EP0243604A2 EP0243604A2 (en) 1987-11-04
EP0243604A3 true EP0243604A3 (en) 1989-08-23
EP0243604B1 EP0243604B1 (en) 1992-09-16

Family

ID=25324986

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87102620A Expired - Lifetime EP0243604B1 (en) 1986-04-29 1987-02-24 A magnetic recording medium

Country Status (5)

Country Link
US (1) US4654276A (en)
EP (1) EP0243604B1 (en)
JP (1) JPS62257617A (en)
CA (1) CA1269894A (en)
DE (1) DE3781712T2 (en)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2522246B2 (en) * 1986-05-06 1996-08-07 ブラザー工業株式会社 Method of manufacturing thin film magnetic recording medium
US4789598A (en) * 1987-01-20 1988-12-06 International Business Machines Corporation Thin film medium for horizontal magnetic recording having an improved cobalt-based alloy magnetic layer
US4778582A (en) * 1987-06-02 1988-10-18 International Business Machines Corporation Process for making a thin film metal alloy magnetic recording disk with a hydrogenated carbon overcoat
EP0302706B1 (en) * 1987-08-06 1994-07-27 Sumitomo Metal Mining Company Limited In-plane magnetic disc
US5063120A (en) * 1988-02-25 1991-11-05 International Business Machines Corporation Thin film magentic media
US4929514A (en) * 1988-03-22 1990-05-29 Hewlett-Packard Company Thin film media for high density longitudinal magnetic recording
US5143794A (en) * 1988-08-10 1992-09-01 Hitachi, Ltd. Magnetic recording media for longitudinal recording, process for producing the same and magnetic memory apparatus
EP0364631A1 (en) * 1988-10-17 1990-04-25 Mitsui Petrochemical Industries, Ltd. Thin film of amorphous alloy
US4902583A (en) * 1989-03-06 1990-02-20 Brucker Charles F Thick deposited cobalt platinum magnetic film and method of fabrication thereof
US5106703A (en) * 1989-11-27 1992-04-21 Carcia Peter F Platinum/cobalt multilayer film for magneto-optical recording
US5112699A (en) * 1990-03-12 1992-05-12 International Business Machines Corporation Metal-metal epitaxy on substrates and method of making
JPH07118417B2 (en) * 1990-12-21 1995-12-18 インターナショナル・ビジネス・マシーンズ・コーポレイション Magnetic recording medium
US5149409A (en) * 1991-01-11 1992-09-22 International Business Machines Corporation Process for fabricating thin film metal alloy magnetic recording disks to selectively variable coercivities
US5466524A (en) * 1992-05-07 1995-11-14 Kabushiki Kaisha Kobe Seiko Sho Barium hexaferrite-silicon nitride-carbon magnetic recording medium
EP0576376B1 (en) * 1992-06-26 1998-05-06 Eastman Kodak Company Cobalt platinum magnetic film and method of fabrication thereof
US5693198A (en) * 1992-06-30 1997-12-02 Hmt Technology Corporation Method of producing a magnetic recording medium
US5580667A (en) * 1992-06-30 1996-12-03 Hmt Technology Corporation Multilayered medium with gradient isolation layer
US5581417A (en) * 1992-12-11 1996-12-03 Eastman Kodak Company Apparatus and method for anhysteretically recording from master drum to slave web
US5567523A (en) * 1994-10-19 1996-10-22 Kobe Steel Research Laboratories, Usa, Applied Electronics Center Magnetic recording medium comprising a carbon substrate, a silicon or aluminum nitride sub layer, and a barium hexaferrite magnetic layer
JPH08147665A (en) 1994-11-11 1996-06-07 Hitachi Ltd Magnetic recording medium and magnetic memory device using the medium
US5750270A (en) * 1995-02-07 1998-05-12 Conner Peripherals, Inc. Multi-layer magnetic recording media
JPH08227515A (en) * 1995-02-21 1996-09-03 Hitachi Ltd Magnetic recording medium for in-plane recording and production thereof
JPH08329442A (en) * 1995-05-30 1996-12-13 Fuji Electric Co Ltd Magnetic recording medium
US5778302A (en) * 1995-09-14 1998-07-07 Tosoh Smd, Inc. Methods of making Cr-Me sputter targets and targets produced thereby
US6143388A (en) * 1997-11-24 2000-11-07 International Business Machines Corporation Thin film disk with onset layer
JP2001184626A (en) 1999-12-24 2001-07-06 Hitachi Ltd Magnetic recording medium and magnetic memory device
US7314675B1 (en) 2003-01-30 2008-01-01 Seagate Technology Llc Magnetic media with high Ms magnetic layer
US7298588B2 (en) * 2003-06-17 2007-11-20 Seagate Technology Llc Magnetic recording media using directly textured glass
US20060234089A1 (en) * 2005-04-13 2006-10-19 Imation Corp. Multi-layered sputtered thin metal film recording medium comprising a tungsten seed layer and a chromium-titanium-tungsten intermediate layer
US7670694B2 (en) * 2006-12-22 2010-03-02 Hitachi Global Storage Technologies Netherlands B.V. Media for recording devices
US20090274932A1 (en) * 2008-05-02 2009-11-05 Imation Corp. Sputtered metal film recording medium including texture promotion layer
WO2013106948A1 (en) 2012-01-18 2013-07-25 芮宝生医股份有限公司 Method for manufacturing magnetic particle composite

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140513A1 (en) * 1983-08-24 1985-05-08 International Business Machines Corporation Thin film magnetic recording structures
EP0241155A1 (en) * 1986-03-31 1987-10-14 Unisys Corporation Depositing vanadium underlayer for magnetic films

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3321328A (en) * 1962-11-15 1967-05-23 Ibm Coating of aluminum substrates with a magnetic material
JPS57205821A (en) * 1981-06-11 1982-12-17 Nippon Gakki Seizo Kk Magnetic recording tape
US4438066A (en) * 1981-06-30 1984-03-20 International Business Machines Corporation Zero to low magnetostriction, high coercivity, polycrystalline, Co-Pt magnetic recording media
JPS59198568A (en) * 1983-04-27 1984-11-10 Hitachi Ltd Magnetic disc device
JPS59227107A (en) * 1983-06-08 1984-12-20 Hitachi Metals Ltd Magnetic recording medium
US4610911A (en) * 1983-11-03 1986-09-09 Hewlett-Packard Company Thin film magnetic recording media
JPS6246945A (en) * 1985-08-21 1987-02-28 株式会社　梅彦 Efflorescence preventive cement
JPS62128019A (en) * 1985-11-28 1987-06-10 Sony Corp Magnetic recording medium
JPS62223813A (en) * 1986-03-25 1987-10-01 Hitachi Metals Ltd Magnetic recording medium

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0140513A1 (en) * 1983-08-24 1985-05-08 International Business Machines Corporation Thin film magnetic recording structures
EP0241155A1 (en) * 1986-03-31 1987-10-14 Unisys Corporation Depositing vanadium underlayer for magnetic films

Also Published As

Publication number Publication date
EP0243604A2 (en) 1987-11-04
DE3781712D1 (en) 1992-10-22
DE3781712T2 (en) 1993-04-01
JPS62257617A (en) 1987-11-10
EP0243604B1 (en) 1992-09-16
US4654276A (en) 1987-03-31
JPH0557646B2 (en) 1993-08-24
CA1269894A (en) 1990-06-05

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